Clean gutters and clear clogs that could limit water flow in the event of torrential rain

Take photos or video of the inside and outside of your home. This could become invaluable in the event of a major catastrophe

Stock Up on Supplies:

When a storm is imminent, supplies can be hard to come by. However, purchasing
items early in the season can put you at ease. Some states even offer tax free
holidays on the purchase of emergency preparedness supplies. Even if your state
does not, you can still take advantage of sale opportunities to purchase:

Mitigation
materials to keep on hand such as tarps, nails, plywood, and garage door reinforcement kits